[Mateo81]

Mateo81,
Am I reading your posts correct that you are saying that your minix neo X7 and Gotham h/w accel module libsf and medaicodec are giving you problems on hd content playback

Yes, It´s exactly that on my Minix Neo X7 (I have two units of X7) one unit with latest stock firmware 4.2.2 JB OS and other unit with a 4.4.2 KK OS custom rom; currently I´m running the final Gotham, re-loaded as 05 May 2014 after the initial problem of the first android version on 04 May. I have to disable both HW acceleration features, LibStageFright & MediaCodec to can play HD content; I had tested with one or another or both at same time, no matter all the times produce the same problem; the video stops commonly at 10 min playing track mark, while the audio continue. So, my setup to avoid this repetitive problem is work only with Software acceleration.

This final Gotham version 05/May acts very similar in my case like the first RC nightly build from 19/apr (xbmc-20140419-51d4cbd-Gotham-armeabi-v7a) where at least the HD video can start with video and audio, but stops at 10 minutes; but with Software acceleration works.
The other two RC nightlies builds from 27/ Apr and 02/ May (xbmc-20140427-2372235-Gotham-armeabi-v7a & xbmc-20140502-91880f1-Gotham-armeabi-v7a) the problem is worse, the same HD videos even doesn´t start to play; but as well with Software acceleration works.

At home, We require for the family to use "subtitles" and working with XBMC without external player it´s a must for the efficient & more complete access to subtitles' repositories/collections, and easy way to locate subtitles through different subtitles addons into XBMC, so given that hardware acceleration is not working or compatible into XBMC at the moment on Minix Neo X7 conflicting with the HD content, I have to use only Sofware Acceleration Feature, with the subsequent loss of performance or without very smooth playback that can be reached when hardware acceleration can work. That´s the case, since the history started with the "XMBC Minix edition - Frodo based" (this version only contain one HW accel feature, "LibStageFright") on Jelly bean 4.2.2 OS to now on KitKat 4.4.2 OS. This is not a complain, please do not get me wrong, it´s point out the problem, leaving over the table what is the current limitation on Minix Neo X7 or may be many RockChip RK3188 - GPU Mali 400 based TV boxes or TV sticks with the current status of XBMC.

EDIT: Unfortunately, I have to add that testing more HD content video I had found last days after updated to last Gotham final a couple of stuff that even does not support the "Software Acceleration, Mult-ithread video decoding", so to can play it I have to disable as well Software Accel, not any single video acceleration module must be enabled; this is the most extreme case that I had found. But when all video accel features are disabled the video/movie counter do not progress, stays in 00:00:00 but the video/audio content plays fine.